Now I can only imagine this sounds I am hearing is coming from the AC compressor because it only makes this sounds when the AC is on.

What my truck is doing is making a loud SNAP type sound whenever I accelerate from stop. This sounds like a belt being pulled taught or those little things you throw on the ground and they crack when they meet the ground. The more I lay into the pedal the louder this sound gets to a point. Some times it only does it once and sometimes it does this a couple to few times but only noticeable or maybe even does this when the engine is under load?

My AC works great and is ice cold. Everything seems to work other than this odd sound.

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